<!DOCTYPE html>
<html>
<head>
  <meta charset='utf-8'/>
  <title>测试</title>
</head>
<body>
  <form method='POST' >
    username:<input  type='text' name='userName'/>
    password:<input  type='password' name='passwd'/>
    <button type='submit' value='login'>提交</button>
  </form>
</body>
</html>

